Calcium signaling in plant mineral nutrition: From uptake to transport

Plant mineral nutrition is essential for both crop yields and human health. However, the uneven distribution of mineral elements over time and space leads to a lack or excess of available mineral elements in plants. Among the essential nutrients, Calcium (Ca2+) stands out as a prominent secondary messenger that plays crucial roles in response to extracellular stimuli in all eukaryotes. Distinct Ca2+ signatures with unique parameters are induced by different stresses and deciphered by various Ca2+ sensors. Recent advancements in research on the participation of Ca2+ signaling in the regulation of mineral elements has made great progress. In this review, we focus on the impact of Ca2+ signaling in plant mineral uptake and detoxification. Specifically, we emphasize the significance of Ca2+ signaling in regulating plant mineral nutrition and delve into key points and novel avenues for future investigations, aiming to offer new insights into plant ion homeostasis.